This map is important because it demonstrates the natural resource most abundant in Sevastopol- its bays. These bays are naturally fortified by the cliffs pictured with hachures, and the depths are noted in this map as well. These cliffs, depths, and narrow Great Bay opening all contributed to this location being established as the Naval Base for the Russian Black Sea Fleet. (Sydorenko, Crimean Port Cities and Their Hinterland Connections)
